Inseam-trimmer.



PATBNTED SEPT. 17', 1907.

H. LYON.

INSEAM TRIMMER.

APPLIOATION FILED DEO.19,1905.

accomplishing this object, i provide a gage which posipart oithe standard or column of a trimming mnchine .atrd l and upon the lJLtLCliGiJ is mounted a stud (5 which forms a support for a knife-holder 7. The stud is cycured to or forming partoi the lmife-holdcr and thereto its. soeuso.

Application filed December 19,

To all whom it may concern:

lie it known that l, .llltun'r' lir'oN, ol lfirocldon, in the county of vPlymouth and State oi Blassachusotla, have invented certain. new and useful lsnprox'emcuts in lnsemn-Trinuners, of which the following! a. spool-- fication. I

,The object oi the present invention is to provide a, machine for cutting to the proper length the insca-ius of boots and slices, andv which especially adapted to cut the seem at a uniform distance-from the stitches which unite the welt, upper and insole together. in

tions the work with reference to the stitches of the inseam instead of with relerenco to the welt or the crease between the w lt and upper.

Another object is to construct a trimming knife of such shape and so arranged as to make a. clt'eaner and better cut and also to assist in firmly holdingthe work.

The construction by which these objects are attained is more particularly described in the following specification and claims, and is illustrated in tho accompany- Ting drawings, in which,

Figure 1 represents an elevation of the trinnuing mechanism of an. inseztnrtrinnning nutchine. Fi 2 represents a plan View of the same. Fir. 2'5 represents a plan View of the parts beneath the lino o t, of Fig. l Fig. 4- represents a perspective view ol the saline parts. Fig. 5 represents 9, fraginonlm'y view of the trimming kniie and showing in section it lasted shoe applied thereto.

The same reference characters indicate the same parts in all the figures.

Referring to the drawings, 1 represents the upper having boaringsfl 3 in which is rotatabl y mounted ashail; 4. An arm or bracket extends from the standlindrieal and the ltniie holder. has a eylirulrical bore fitting over the stud so that the holder may oscillate thereon. Y

Extending upwardly from. the stud an arm 8 seis connected by means of a wrist pin 9) an eccentric rod. 10 connected to an eccentric strap ll surrounding on eccentric 12 which is fast to shaft; 4. This shaft is rotated continuously by any suitable means, such {[5 the belt pulley 13, and by its rotation through the medium of the eccentric and eccentric rod, produces an oscillatory movement of the knife-holder about the stud (5.

Fixed to the lower part of the knife-htdtler is a knife blade 14 which is curved circularly about lh e center of the stud so that when it is oscillated, "Lll parts of the knife travel in paths equi-distant lroiu the stud. The

Specification of Letters- Pateut.

AillI-TRIMMER.

Patented Sept. 17, 1907.

1.005. Serial No. 292,4ti3- knife blade l-l i'orms part of a cylindrical surface and the pat h in which it oscillatr s a continuation of such surface. 'lbe preferred cor .rucr'ion ol' hnih boldcr is that illustrated, which luu; iwo arms extending downwardly and substantially radially from the supporting stud. The knife bladelei is :i-ttaclnal to the ends of these arms and consists ol a. thin curved hoop-l1te strip. livoted at l?) to the bracket 5 is an arm 1? which constitutes the gage holder and upon the end of which mounted the 5 go J7. The latter consists of a thin disk which is pivoted to the end ol the holder ll) so as to be capable of rotating freely, and has its periphery ":ttcd to form teeth or pointed projections 18. The gage holder lti so mounted that the gage is supported beneath and substantially. in the plane perpendicular to the stud (3 in which the ladle-holder oscillates. lly u of the pivotal connection between thogago holder and llfittlilfl' 5, the gage is movable toward and from the knife. so as to sdjust the distance between them, nnd it only be lined in any adjusted position by sci in home the bolt which serves as the pivot 15 and thereby clamping the gage holder against the bracket. it) is a stop beside the cutting edge 20 oi the knifeand it consists of a bar passing through the stud ti and secured by means of a set-screw 2]..

Fig. 5 shows the manner in which the machine opcrates upon a piecev oi work. In this figure there is shown a partially completed shoe upon a last 22, the upper 23, welt 2-4 and channel llap 25 oi the insole 26 being united together by a line ol stitches 27. In order to cut oil to the proper length the edges oi the welt, upper and channel flap, the lasted shoe is held with the insole uppermost and the crease of the welt through which the stitches 27 pass pressed against the gorge l7. As the machine is not encumbered with any clamps or other devices for entering the crease betweeuthe welt and upper and holding the gage against the upper side of the welt, the gage is free to boar directly upon the stitches and the projections 18 of the gage are enabled to cntcr somewhat into the indentations of the seam produced by the awl holes tl'frough which the stitches puss. lreierubly the se rations of the disk. 7 are spaced to correspond with the distance between stitchesso thatns the shoe is led past the gage, said serrations will extend into the indentations successively and thus the Work will be guided wholly with i'efracnce to the stitches. As the gage during any one operation is nutiutaincd at a lixedv distance from the knife, the stitches also will be held at a constant distance from the knife, and thus the inseam will be trimmed off at a uniform distance at all points from the stitches and there will be no liability either ol the stitches being cut or of too much stock being left.

In all the previous machines oi which I have knowledge which trim the inseam of a shoe, the welt serves as the guide by which to position the shoe with respect to the cutter, the gages being usually adapted to enter the crease between the welt and upper of a shoe and made to position the shoe with reference to this crease. When the shoe is 'so guided, it is not possible'to trim the inseam at a uniform distance from the stitches because the different parts of a welt are not ently oi the position of the welt. The stop 19 bears against the upper side of the insole and determines the angle of the cut. It also prevents the knife from injuring the insole.

It will he noted that the cutting edge 20 of the. knife is oblique to the path in which it oscillates,' and that its obliquity is such as to cause it to press upon the woi'k while it is moving toward the gage, this movement being the cutting stroke. This construction causes the knife to press .the work against the gage while it is cutting and thereby to hold it more firmly,

and it also makes a cleaner and surer cut than would be the case if the edge were exactly parallel to its path 'of motion. L

The plane of'the diskwhich serves as the gage is substantially parallel with that portion of the knife which acts upon the work when the latter is against the gage and'thus the resistane of the gage to the pressure of the work is exerted in a direction perpendicular to the axis upon which it is pivoted.

I claim: g I g 1. An inseam trimmer comprising a cutter, and a gage arranged to engage the line of stitches of the inseam and hold the same a constant distance away from the cutter,

whereby the cutter is positioned soiely by the engagement of the gage with the inseam stitches.

.' 2. An inseam trimmer comprlsing cutter, and a gage constructed to enter the stitch depressions of the inseam and guide the same at a constant distance from the cutter, whereby the cutter is positioned solely by the engagement of the'gage with the inseam stitches. Y

A'n inseam trimmer comprising a cutter, and a gage provided with movable projections'arrzmged to enter the depressions of the inseam of ashes for guiding the same at a uniform distance from the cutter.

4. An inseam trimmer comprising a cutter, and a gage wheel supported at a predetermined distance from the cutter and free to enter the inseam crease of a shoe and beniupon the stitches thereof, whereby the work may be guided solely by the whei engaging said stitches to position the inseam stitches at a uniform distance from the cutter. i

5. An inseam trimmer comprising a cutter, and a gage consisting of a freely rotatable wheel mounted to engage the stitches of a shoe inseam, and position the cutter solely by the engagementof the wheel with said stitches.

6. An inseam trimmer comprising a cutter, and a freely rotatable gage wheel mounted adjacent the cutter and free to engage the stitches of a shoe inseam, the wheel being provided with projections adapted to enter the whereby the cutter is positioned solely by the engagement,

of the gage with the inseam stitches. I

8. An inseam trimmer comprising a knife' oscillatable in a curved path, thecdges'of said knife being inclined reia- Y tive to its path of oscillation, and a gage arranged to bear on the outer side of the inseam of a shoe'and to support the work ngainstfhe thrust of the knife edge, the operative stroke of the knife exerting pressure in a direction toward the gage.

E). An inseam trimmer comprising a gage adapted to bear against the inseam of a shoe and an oscillating knife having a eut'ting edge oblique to its path of motion and arranged to press the work against the giigeduring the cuttingstroke, the operative stroke of the knife exerting pressure in a direction toward the gage.

10. Au inseam trimmer comprising an oscillating knifehiade'curved circularly about its center of oscillation and having its cutting edgeohlique to its path of motion, a

a shoe, and a, gage constructed and arranged to engage the stitches of the inseam of the shoe and guide the same at a uniform distance from the knife, and hold'the work against the cutting pressure of the knife, the operative stroke of the knifeexerting pressure in a direction toward the gage.

11. An inseam trimmer comprising an oscillating knife blade curved circularly about its center of oscillation and having its cutting edge oblique to its path of motion, and a gage consisting of a disk loosely pivoted in the plane of oscillation of the knife, the operative strokeof the knife exerting pressure in a direction toward the'gage.

12. An inseam trimmer comprising an oscillating knife blade curved circularly-about its center of oscillation and having its cutting edge oblique to its path of motion, =and a gage consisting of a disk loosely pivoted in the plane of oscillation of theknife and serrated at its periphery,

the-operative stroke of the knife exerting pressure in a direction toward the gage.

. In'testhnony whereof I have. aifixed. my signature, in presence of two witnesses.

HARRY LYON.

Witnesses:

LYMAN 1 GARFIELD, .ELLA O. Glmrrnnn.

stop beside said blade adapted to bear upon the insoleoff 

